It has a feature called Mac Virtual Display, which I guess creates a large screen in space that mirrors your MacBook. But I’m not sure about a more general-purpose input than that.
easy guess is that it's similar to AirPlay with an AppleTV, but that's just a SWAG on my part. it works well enough on my 65" 4K TV. I don't watch features or anything (that's the point of the AppleTV), but the shared/extended monitor looks fine from my couch